The Fourth Doctor and Leela arrive in Victorian era London near a waxwork museum. Inside, Leela is spooked by the wax dummies. Eventually she and the Doctor discover that the dummies are actually Linktons, a humanoid species made of wax. The Doctor explains that they can teleport vast, inter-galactic distances with their gold-powered technology. Leela attacks that technology with her knife. It sparks, starts a fire and melts the invading Linktons. Once again, Leela's warrior instincts prove unexpectedly useful to the Doctor.